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No, you don't need any channels to run Alby Hub. Ah, so you had it working before on the same Umbrel? Did anything change in between?

I highly suspect that those certificate files aren't there, let's try to get the Umbrel Lightning app running first, that should then populate those files.

Homer Hodl 1y ago

Appreciate the help! I do see those files in the paths you mentioned. Should I be looking for anything specific within them?

I should also mention, that when I first started troubleshooting I deleted tls.cert and tls.key in the /LND directory as I had read on the Umbrel site that was a fix for the Lightning app being stuck loading. After removing them the Lightning seems to launch fine, and I do see the cert and key files were recreated.

Last note, I’ve never actually used the Lightning app on my node other than to look around in it (never had any channels or sent anything)

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Discussion

adithya 1y ago

Do you see the env vars $APP_LIGHTNING_NODE_IP and $APP_LIGHTNING_NODE_GRPC_PORT printing something in the terminal?

If you can see those too, you should atleast see a different error than what you shared above. If not, try reinstalling alby hub on umbrel (I believe that should work, given you have the required LND conf)

Homer Hodl 1y ago

When you say printing something in the terminal are you referring to the log file?

adithya 1y ago

No, I mean ssh into your umbrel node using

ssh umbrel@

and then

printenv APP_LIGHTNING_NODE_IP

printenv APP_LIGHTNING_NODE_GRPC_PORT

But I think this is not necessary, you should be having all the LND files, can you just uninstall and install Alby Hub again?

The issue must be that the tls certificate was empty when AlbyHub was first run, so i sets it to empty and never updates it if it was set later. This is fixed in dev and will be released in the next version!

Let me know if that works!

Homer Hodl 1y ago

Success! After upgrading to Umbrel 1.3 didn’t fix it I reinstalled Alby Hub and have gotten to the wallet migration step. appreciate your assistance!

adithya 1y ago

Yay! Sorry for the issue though, you will not face this again after the next release, it will automatically update the LND config files if they change ✌️